Scholastic is once again breaking down the past month’s bestselling books based on purchases made through its US network of in-school book clubs. Read on for the top-five picture books, transitional readers, early chapter books, chapter books, middle grade, young adult and non-fiction from May-June 2011.

The top-five picture books:

1. The Night Before Summer Vacation by Natasha Wing

2. The Night Before Kindergarten by Natasha Wing

3. Just Me and My Dad (Little Critter) by Mercer Mayer

4. Kindergarten Rocks! by Katie Davis

5. Crunch Munch Dinosaur Lunch! by Paul Bright

The top-five books for transitional readers:

1. Kung Fu Panda 2: Kaboom of Doom

2. For Green Lanterns Only (Green Lantern)

3. Disney Princess: Beautiful Brides

4. Fancy Nancy Sees Stars by Jane O’Connor

5. Pinkalicious: School Rules! by Victoria Kann

The top-five early chapter books:

1. Calendar Mysteries: June Jam by Ron Roy

2. The Bailey School Kids Jr. Chapter Book: Dragons Do Eat Homework by Marcia Thornton Jones and Debbie Dadey

3. The Real Deal About Third Grade by Leslie McGuire

4. Judy Moody by Megan McDonald

5. Cam Jansen and the Wedding Cake Mystery by David A. Adler

The top-five chapter books:

1. Super Diaper Baby 2: The Invasion of the Potty Snatchers by Dav Pilkey

2. Summer According to Humphrey by Betty G. Birney

3. Pirates of the Caribbean: On Stranger Tides

4. The Sister Switch (Candy Apple) by Jane B. Mason and Sarah Hines Stephens

5. Spy Cat by Peg Kehret

The top-five middle grade books:

1. The Secret Garden by Frances Hodgson Burnett

2. The Kane Chronicles, Book One: The Red Pyramid by Rick Riordan

3. Sand Dollar Summer by Kimberly K. Jones

4. The Kane Chronicles, Book Two: The Throne of Fire by Rick Riordan

5. Moon Over Manifest by Clare Vanderpool

The top-five young adult books:

1. Alex Rider: Scorpia Rising by Anthony Horowitz

2. The Face on the Milk Carton by Caroline B. Cooney

3. Thirteenth Child by Patricia C. Wrede

4. Magic Under Glass by Jaclyn Dolamore

5. How to Ditch Your Fairy by Justine Larbalestier

The top-five in non-fiction:

1. Guinness World Records 2011

2. National Geographic Kids: Storms! by Miriam Goin

3. Who Would Win? Killer Whale vs. Great White Shark by Jerry Pallotta

4. My Book of Planets

5. Punctuation Celebration by Elsa Knight Bruno

Visit Scholastic’s Book Talk for more information about the monthly bestsellers list.